All characters in this story are over the age of 18.
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The air was crisp and clean and the rich loamy soil of the forest floor crunched under Sarah's hiking boots as she made her way up the switchback. Her muscles were burning with a satisfying ache that reminded her it had been a week since she'd properly hit the gym. Hunter and Evan, her brother and father respectively, were behind her carrying a majority of the heavier gear while her sister Melody was up front, her toned behind stretching the fabric of her neon pink workout leggings. Melody was a petite young woman where her sister was tall and lithe, but both women were undeniably gorgeous in their own unique ways. Sarah considered how much her sister looked like their mother. Now that Melody had grown up they were almost exactly the same height. Sarah took a moment to readjust her pack and then carried on after her sister.
The four of them were several hours into a long hike that led to a secluded campsite, a gem of natural beauty hidden away deep in the mountains that overlooked the metropolitan area they lived in. To call the spot nearby was perhaps a stretch, it had taken several hours to drive to the empty parking lot that was then only the beginning of their several hour-long trek. Sarah was looking forward to spending the weekend camping with her family, something she and her brother and sister hadn't done since they were preteens. It would be doubly strange knowing that the twins were lovers, and even stranger that they knew about her and their father's relationship. Sarah wasn't sure if she wanted it to come up or not. She knew it would.
As the group reached the top of the ridge the switchback was leading up, Sarah took a swig from her water bottle. The view from this particular overlook was vast and spectacular. A large valley spread out before her with a pristine lake shimmering in the distance. The forested slopes stretched to either side as far as the eye could see and the sky was clear and cloudless. A gentle breeze carried the smell of pine, and a squirrel chittered at her from a nearby branch.
"Damn, that view is almost as gorgeous as you are."
Sarah blushed as she turned around to see her father's handsome face smiling down at her, his brown eyes glimmering with flecks of hazel in the sunlight. Hunter was standing a few feet behind Evan, his own eyes roving up and down Sarah's body. He looked away when he noticed Sarah watching his gaze, suddenly embarrassed. Sarah's attention was ripped from her brother and her heart quickened as she was pulled into her father's arms. She'd gotten so used to their relationship being kept secret that now seeing him display true affection to her in front of his other two children was terrifying and thrilling in equal measure. She couldn't resist stealing a kiss from him as her arms slid around his neck.
Evan returned her kiss eagerly, his hands roaming over her lower back. Sarah pressed her body against him, feeling the bulge in his pants that was always there when he held her. The heat between her legs grew to match him. She felt herself sway as she pressed the thin fabric of her leggings covering her pussy into the warmth of his crotch, unbalanced by the weight of the pack she was wearing.
"Ahem, we're still here you know."
Evan and Sarah parted sheepishly, blushing slightly.
"Sorry guys," Sarah said. "Guess we got carried away."
Hunter smiled, but Sarah thought she detected a hint of something she couldn't discern in his eyes. Was it awkwardness? Lust? Shame? Fear? A mix of all those emotions and more?
"Well, the camp is still a little ways off. Let's get there and set up camp before we get too comfortable."
"What's this?" Evan asked, surprised. "I'm going to be lectured by my own son? Who are you and what have you done with Hunter?"
They all laughed, and Melody stepped over to Sarah as father and son carried on ahead down the trail.
"It's really cool seeing Dad happy," Melody said quietly. "He's been looking really good lately, I don't think I ever realized it growing up, but he was always very lonely and it's only now that he isn't that I noticed."
"I know Mel," Sarah replied. "I'm really happy to be a part of that. I love him, and I love you too. Thanks for being so... understanding. I know this is weird."
"Don't worry about it. It is pretty strange, but part of that is that it also feels pretty natural. Like, it makes sense. It reminds me of the time when Hunter and I started messing around. It feels right."
The two women looked at each other, Sarah could feel an understanding emanating from her sister she'd never shared with anyone other than her best friend Sydney.
"Besides, I get it. Hunter and I are closer than we've ever been. He's always been there for me. I think part of what makes me feel so happy is that it feels really good that I don't have to worry about what you or Dad think about our relationship anymore. Actually, having you know about us makes me feel way less alone."
"I feel the same way Mel."
"Just, uh, heads up, try not to be so loud at night when you have visitors you want to keep the secret from, okay? Dad's house is nice but the walls are a little thin."
Melody giggled, and Sarah laughed nervously, a blush spreading across her cheeks.
"Yeah, sorry about that. Dad didn't want to risk it but I tried to convince him I could keep quiet. I figured if anything, you two already knew."
"Clearly, you couldn't keep quiet."
"I overestimated my own ability to withstand his attentions. I wanted him pretty bad though."
"He's pretty good then? A girl wonders now and again."
Sarah grinned at her younger sister.
"Wondering what could've been if you got there first?"
"Oh god, no. Ew. He's my dad."
"You're the one in love with our stinky brother. What's your point?"
Melody's cheeks went red and she turned her head away, pretending to cough.
"I mean, you don't get to where we are by not being a little curious about these sorts of things. And I mean, you seem to be really into him."
Up ahead, the men had kept moving down the trail and were waving at Sarah and Melody to follow them. Side by side, the pair kept walking while chatting about their sex lives. Now that the ice had been broken, it felt so natural to share the intimate details of her sex life with her sister. It was nice being able to confide in her without having to fear her judgment or ridicule.
"Well, it's not just that I love him or that we take care of each other. We're really compatible in bed. Like, really really compatible."
"How so?"
"Well, we both have really high sex drives. We make love literally all the time. Dad always wants to fuck and so do I. It's great."
"You too? Fuck... I guess we really are all related."
Sarah and Melody laughed. The trail was finally flattening out and they didn't need to work as hard to breathe and carry their heavy packs. Sarah felt wonderful hanging back and chatting with her sister. It had been too long since they really talked about life.
"Well, when we're here on the west coast anyway. Back home it's not really practical."
"How so?
"Well, back home he's married, and we have to tiptoe around Mom."
"I thought they were in an open marriage?"
"Yeah, but, well, he's still like, married."
"Right."
"So when he's there he's HER husband. And I'm his daughter. I know Mom is cool with Dad fucking other people, but I'm not so sure how she'd feel about him fucking their daughter."
"Makes sense. I assume you think she'd be jealous. Furious at both of you. It could do a lot of damage."
"Exactly."
"Does that mean you don't do it together when she's visiting you guys?"
"Hell no! She sleeps in his bed and clearly we'd get caught anyway because I can't trust myself to not make noise when he fucks me."